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Method for carrying out instant messaging with packet switched data

  • US 9,306,772 B2
  • Filed: 10/14/2002
  • Issued: 04/05/2016
  • Est. Priority Date: 10/19/2001
  • Status: Active Grant
First Claim
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1. A method for providing a service, the method comprising:

  • setting up a communication connection between a terminal and a server providing a service, wherein said communication connection is set up via a packet switched network to which the terminal is connected, wherein setting up the communication connection comprises;

    sending from the terminal a signaling message comprising an information element comprising a Packet Data Protocol (PDP) type number, the information element indicating (a) the service for a requested communication connection to be set up, wherein the service is associated with the PDP type number, and (b) a terminal address to be used for setting up the requested communication connection for the service, wherein the terminal address is associated with the PDP type number but the information element does not contain the terminal address;

    receiving the signaling message by the packet switched network; and

    determining by the packet switched network, based on the service indicated in the signaling message and a check of the terminal'"'"'s subscription, whether the terminal address indicated by the signaling message is a valid address for said service; and

    in response to the packet switched network determining that the terminal address is a valid address for said service, identifying based on the terminal address a server that provides said service and setting up a communication link to said identified server for providing the requested communication connection, thereby ensuring that the communication connection is set up with a server that provides said service.

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